<template>
  <header class="header">
    <h1>todos</h1>
    <input id="toggle-all" class="toggle-all" type="checkbox" v-model="isAll">
    <label for="toggle-all"></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      autofocus
      @keydown.enter="enterFn"
      v-model="task"
    />
  </header>
</template>

<script>
export default {
    props:['list'],
 data(){
    return{
        task:""
    }
 },
 methods:{
    enterFn(){
        if(this.task === ''){
            alert('请输入正确内容')
            return
        }
        this.$emit('enterBtn',this.task)
        this.task = ''
    }
 },
 computed:{
    isAll:{
        set(val){
            this.list.forEach(item => item.isDone = val);
        },
        get(){
            return this.list.every(item => item.isDone);
        }
    }
 }
}
</script>